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A solution is prepared my mixing the following 20.0ml of 0.010M KI(aq), 10.0 ml of 0.0010M Na2 S2O3(aq), 10.0 ml of0.04M KBrO3(aq), and 10.0ml of 0.10M HCl.we will measure the rate of the following redox reaction: 6I + BrO3 +6H -> 3I2 +Br + 3H2O rate = 1/3 delta[I2]/delta t after 219 seconds When the reactants are mixed it is found that the molarity of the I2 has increased from 0M to 1.0 x 10-4M . a) compute the average rate of reaction during this 219 s period after mixing b.) compute delta[BrO3] during the initial 219s
A testing facility found that 8.35*10^23 molecules of carbon dioxide were produced when a sample of octane was burned in air. If this combustion process is known to produce an 86.7% yield, how many grams of octane were in the sample?
She pours a 50.0 mL sample of water at 345 K into the calorimeter containing a 50.0 mL sample of water at 298 K. She carefully records the final temperature of the water as 317 K. What is the value of Ccal for the calorimeter?
Titrated three different samples of KHP and determined that the sodium hydroxide molarity was 0.1234 M, 0.1244 M, and 0.1199 M, respectively. Calculate the sample mean and the sample slandered deviation?
The density of lead is 11.4 g/cm3 at 25°C. Calculate the volume occupied by 25.0 g of lead.
Gold (III) oxide, Au2O3, undergoes a thermal decomposition reaction to form gold metal and oxygen gas. Write a balanced molecular
Identify the incorrect names or formulas.
A stock solution is prepared by adding 20 mL of 1.31 M AlCl3 to enough water to make 74 mL. What is the Al3+ concentration of 45 mL of the stock solution?
The compound is involved in the citric acid cycle for energy production within the cell. However, the compound is unstable and slowly decomposes spontaneously. Draw the decomposition products.
If 25.0 grams of potassium chlorate decomposes, how many grams of gas are released as a product?
iodine clock reaction experiment, between iodide ions and persulfate ions, why should the rate orders w.r.t iodide and persulphate ions be integers(and therefore we can round off the experimental value to the closest integers)? I actually performe..
Equal volumes of 0.180 M weak base (Kb=2.5x10^-9) and 0.180 M HCl are mixed. Calculate the pH of the resulting solution.
Application of Avogadro's law - To evaluate the volume of a gas using Avogadro's Law.
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